It has more aliases than a spy novel. Berkeleyomyces basicola has been known as Thielaviopsis basicola, Trichocladium basicola, and a dozen other names over the past century. Each reclassification was an attempt to understand where it belonged. The fungus did not cooperate. It just kept rotting roots. The name basicola means root dweller. It is accurate. The fungus lives in the soil waiting for a susceptible host. It infects through root tips and wounds producing dark spores that clog the vascular tissue. The roots turn black. The plant wilts. The above-ground parts look thirsty even when the soil is wet. By the time you notice the damage is done. It attacks over two hundred plant species. Carrots. Tobacco. Kiwifruit. Roses. Cotton. Peas. Beans. Lettuce. The list goes on. Farmers know it. Horticulturalists fear it. There is no cure once the soil is infected. Only management. Only prevention. The spores are resilient. They can survive in soil for years waiting for a host to appear. They are spread by water, by wind-blown soil, by contaminated tools and boots, by infected plant material. A single spore can start an epidemic. The fungus is patient. It has time. Berkeleyomyces was resurrected as a genus in 2019. The name honours Berkeley, a nineteenth-century mycologist. The fungus had been hiding in other genera for decades. Molecular work showed it needed its own place. Taxonomy caught up. The pathogen did not notice. In New Zealand, Berkeleyomyces basicola is present in agricultural soils across both main islands. It is particularly problematic in carrot and potato crops. Kiwifruit orchards in the North Island have also suffered losses. The fungus is here and it is not leaving. Management involves crop rotation, resistant varieties, soil fumigation, and good hygiene. None of these are perfect. A crop rotation that avoids susceptible hosts for five years might reduce the spore load but the spores linger. Fumigation kills some. Not all. The fungus adapts. It always adapts. The name Berkeleyomyces sounds academic. The fungus is not academic. It is a problem. A persistent profitable agricultural problem. Scientists study it. Farmers fight it. It continues. The spore types are fascinating if you are a mycologist. Chlamydospores are thick-walled, dark, built for survival. Endoconidia are thin-walled, produced in chains, designed for rapid infection. Two strategies. One fungus. It covers its bets. Berkeleyomyces basicola is not a conservation concern. It is a crop pathogen. It is doing very well thank you.